It's redundant for this code. `$foo` means data that's to be treated as either a single item or as a single item container containing a single item.
`$$foo` means put the single item in $foo into a single item container containing it. Given that this appears on the right of `=` the single item is then taken out of the container. Which means the extra `$` is redundant. -- raiph On Sun, Oct 14, 2018 at 12:36 PM Tom Browder <tom.brow...@gmail.com> wrote: > On Sun, Oct 14, 2018 at 5:13 AM Ralph Mellor <ralphdjmel...@gmail.com> > wrote: > > > > Almost certainly your problem is elsewhere. > > What is the meaning of the double dollar sign ($$) in the problem code? > > -Tom >
